Table of Contents
- 1. Product Specifications & Comparative Analysis
- 2. Detailed Applications of Propyl Paraben
- 3. Implementation Case Studies
- 4. Verified Client Success Stories
- 5. Professional Consultation & Quotation
1. Product Specifications & Comparative Analysis
Propyl Paraben (CAS 94-13-3) Technical Parameters
| Parameter | Specification |
|---|---|
| Chemical Name | Propyl 4-hydroxybenzoate |
| Molecular Formula | C10H12O3 |
| Molecular Weight | 180.2 g/mol |
| Appearance | White crystalline powder |
| Solubility | 0.04% in water (20°C), soluble in ethanol |
| Melting Point | 96-99°C |
Comparative Analysis with Common Preservatives
| Preservative | pH Range | Solubility | MIC* Against E. coli |
|---|---|---|---|
| Propyl Paraben | 4-8 | 0.04% in water | 100 ppm |
| Methyl Paraben | 3-8 | 0.25% in water | 250 ppm |
| Butyl Paraben | 4-7 | 0.02% in water | 75 ppm |
*Minimum Inhibitory Concentration at 25°C
2. Detailed Applications of Propyl Paraben
Pharmaceutical Applications
Widely used in topical ointments (0.01-0.03% w/w) and oral suspensions (0.05% max) for microbial stability. Compatible with most APIs except strong oxidizing agents.
Cosmetic Formulations
Effective in water-in-oil emulsions at 0.1-0.8% concentration. Particularly stable in pH 5-6 environments common in skincare products.
Food Preservation
Approved under E number E216 for baked goods (max 0.1%) and dairy desserts (0.03% limit). Synergistic with sodium benzoate in acidic beverages.
3. Implementation Case Studies
Case 1: Cosmetic Cream Preservation
Challenge: Microbial contamination in organic face cream within 30 days
Solution: 0.2% propyl paraben + 0.1% phenoxyethanol combination
Result: 18-month shelf life achieved with pH 5.5 stability
Case 2: Pharmaceutical Syrup Stabilization
Challenge: Yeast growth in pediatric cough syrup
Solution: 0.04% propyl paraben with citric acid buffer system
Result: USP <51> compliance with 24-month efficacy
4. Verified Client Success Stories
Client A: European Cosmetic Manufacturer
Requirements: Paraben-based preservation for ECOCERT certification
Implementation: 0.15% propyl paraben in 5 SKUs of organic serums
Outcome: 0 microbial counts in 12-month stability testing
Client B: Asian Pharma Company
Requirements: Cost-effective alternative to methyl paraben in tablets
Implementation: 0.02% propyl paraben in enteric-coated formulations
Outcome: 30% reduction in preservation costs with equal efficacy
5. Professional Consultation & Quotation
Technical Support Services
Our experts provide:
– Compatibility testing with your formulation base
– Regulatory compliance analysis (FDA 21 CFR 175.300)
– Customized preservation system design
Contact Our Preservation Specialists
Email: info@vivalr.com
Phone: (86) 15866781826
Service Hours: Mon-Fri 08:00-17:00 GMT+8
Request Custom Formulation Advice
Submit your:
1. Base formulation pH range
2. Target microbial spectrum
3. Regulatory requirements
Receive tailored preservation solutions within 24 working hours.



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